DE19930054C5 - Electromechanical locking system - Google Patents

Abstract

A cylinder casing (11) has first (12) and second (13) retainers. The first retainer is fitted with bearings to rotate as a lock core (14) operated by a key. In the second retainer an electrically operated coupling (16) can be switched through an electrical signal. The lock core allows a lock catch to be turned. The coupling body (18) has bearings to rotate in the second retainer and connects to the lock catch to lock tight.

Description

The The invention relates to an electromechanical cylinder lock according to the preamble of claim 1.

It is common practice Doors and Gates of buildings, rooms campuses or even devices through cylinder locks the initially explained Kind of secure. For the securing of doors a building become common mechanical locking systems used where a key a certain and possibly several other locks and another key another particular castle and the same other castles actuate can. Such a locking system is used for example in residential or office buildings, in which the main entrance door always through all keys to open are while the individual apartments or offices not with all keys be opened can. Such mechanical locking system have the disadvantage that the key must be made consuming. It is also for security reasons often required, in case of loss of a key that opens at least the main entrance door, the entire locking system with all cylinder locks and keys to replace.

It Furthermore, electronic locking systems are known in which the castle through a coded card opened can be. Here is the access authorization in a simple way be regulated by appropriately programmed and coded cards. In case of loss of a card, the access code for all locks can be changed so that no more lock by means of the lost map opened can be. Such locks are for the user usually quite cumbersome to use, as the Card can be inserted in an unusual manner in a reader or passed by a reader must while at the same time the door handle to press is. Also need such locking system often an elevated one Space requirements, for example, next to the door or on the back of the Door. Further have to the systems are always supplied with sufficient energy.

Farther are electronic combination locks known in which a castle after Entering a specific numeric code is released. Here too are usually required to operate two hands or certain Release times to observe.

Further Combined electromechanical cylinder locks are known in which the lock core locked or released by electrically lockable locking pins become. The electrical release, for example, by a transponder system be done, the transmitter and receiver units in the key on the one hand and are arranged in the region of the castle on the other hand. The lock of the lock core has the disadvantage that at sufficient force this barrier can be overcome. Also there is often a disadvantage that this corresponding cylinder lock an increased installation space requires. Such an installation space is not always available or must with increased installation costs be created.

At one of the DE 37 42 189 C2 known cylinder lock, an electromagnet is provided in the web of the cylinder housing below the handle shaft, which releases a pin due to the authorization signal, by which the lock core is rotatably connected to the locking lug. The controller is obviously not on or in the cylinder housing. There are therefore further installation measures required to install this cylinder lock in a lock box. In the cylinder lock according to the DE 40 19 624 A1 the locking core is always rotationally fixed in connection with the locking lug, and an electromagnetic actuator unlocks the locking lug on the basis of the authorization signal. From the DE 36 17 317 C2 It is known to provide a cylinder lock for both remote and manual closure. It is provided a motor that drives the locking lug, if no key is inserted. The insertion of the key causes a mechanical disengagement of the motor, so that the locking lug can be manually rotated with a matching key. The citation DE 196 03 320 A1 describes a cylinder lock for hotels and the like. It lacks the inner knob, so that locking or unlocking the lock from the inside is not possible. It is provided a motor which widens a sleeve, so that a frictional connection between the lock core and locking lug is effected.

The subsequently published EP 0 995 864 A2 describes a lock cylinder in which by the manual Introduce of the key a slider is mechanically biased. The axial movement of the Slider is blocked by a locking member. When detected electronic Authorization, the locking member is opened by an electric motor, so that the mechanically biased slide can extend and a Rotation of the locking nose with the key allows.

An access control system is for example from DE 42 40 560 A1 known.

The invention has for its object to provide a double-actuated cylinder lock for a locking system that can be installed without additional effort. According to the invention, the advantages of an electronic locking system and a mechanical locking system should be largely included be connected to each other.

The Task is according to the invention solved by a cylinder lock with the features of the characterizing part of claim 1.

It is thereby achieved in an advantageous manner that no additional Installation space for the cylinder lock is needed. Rather, it is possible that to accommodate the entire coupling and the control on the cylinder housing, so that Cylinder lock like a conventional one built in mechanical lock can be. All required elements to close and / or Unlocking are available on or in the cylinder housing.

It may still be appropriate when the clutch over Spring means is kept at rest. It is advantageous when the clutch is de-energized at rest. This can reduce power consumption be substantially reduced, since a lock is usually at rest located and only for short time, namely to open the door is pressed. The clutch includes an electromagnet. Such an electromagnetic clutch is relative simple, robust and can be easily and precisely controlled become.

The Clutch allows a free rotation of the lock core at rest mechanically fitting key. This has the advantage that no force on the actual closing mechanism be exercised when not released lock can. damage by incorrect operation or unauthorized intervention can thus be largely avoided.

According to one further embodiment The invention provides that the electrical switching signal is effected by an electronic control, which is an antenna comprises which interacts with a passive transponder system in the key. According to one second embodiment is provided that the electrical switching signal effected by an electronic control that is a receiver unit has, which cooperates with a transmitter unit in the key. This has the Advantage that that electrical switching signal is generated by the key itself. The Operation corresponds to opening with a conventional key, and there are no further measures required by the user. In particular, it is possible that Castle too one-handed to use.

It is cheap, if the antenna for the transponder system or for the receiver unit is integrated in the front area of the cylinder lock and with the electronic control is connected. The front area Here is the key accessible Page. This has the advantage that transmitters, Transponder and / or antenna when opening the lock with the key inevitably near so that one good signal transmission causes can be. In particular, it is possible, however, that the transmission power is reduced can, which, for example, in off-grid power supplies whose Function and standby time is increased.

The Antenna for the transponder system or for the receiver unit can in the front face of the fixed cylinder housing be integrated. It is useful if the key a key grip having a section in which the transponder or the transmitting antenna is integrated and in the inserted position a small Distance to the front face of the cylinder housing Has. Through these measures particularly short signal transmission distances are generated, which also includes the use of small antennas with minimal transmission power allowed.

Basically it is possible that the electronic control over at least one slip ring contact with an external power source connected is. But it can also be provided that the electronic Control over a battery is energized, which is arranged in the knob is. This has the advantage that no Connecting lines from the lock to a power source are required.

Farther it is useful if the antenna for the transponder system or for the receiver unit in the front area of the first receptacle, in particular the front one Face of the fixed cylinder housing is integrated and over at least one slip ring contact with the knob located in the knob electronic control communicates. This will be a very compact Construction achieved. In particular, with a network-independent power supply in the Knob itself all the necessary components are combined in a cylinder lock, the in any door can be used. It is particularly appropriate if the cylinder housing has standardized or standardized dimensions.

Farther At least one switching means may be provided in the cylinder housing, which the mechanically fitting key actuated is to turn on the electronic control. The switching means For example, the electronic control can be predefined Switch on time. This has the advantage that at rest, the entire Control is de-energized and consumes no energy. The life span The battery can thus be increased significantly, so that an early failure the electronic control is not to be feared.

Basically it is possible that the electronic control over at least one slip ring contact with a central data processing system connected is. Thereby can the advantages of a central control and control of access authorizations be exploited. It is then possible, for example, to record with which key when which door open has been. It is also possible to block certain access permissions so that the user Although has the mechanically matching key, but due to the wrong transponder signal not the still required electrical Can generate switching signal for switching the clutch. In a similar way can be used if a key is lost. Of the lost keys would indeed mechanically the lock for example the main entrance door actuate can, however, this would be because of the missing switching signal so that can not be opened.

The Of course, reprogramming of access codes or the like can also be done done without a central data processing system. It is possible in principle, the electronic control, for example, in the knob with appropriate interfaces to provide a change allow access authorizations.

It is obvious that with Such a design of a cylinder lock a versatile locking system provided. In particular, no special installation measures required. The electromechanical cylinder lock only needs against the conventional one replaced mechanical cylinder lock to become. This is possible with simple means and without expenditure of time.

The The invention will be explained in more detail below with reference to the schematic drawing. It demonstrate:

1 a longitudinal section through a cylinder lock according to the invention,

2 the clutch assembly without housing

3 the range of Kupplungsmitnehmers in an enlarged form of representation,

4a , b the clutch with the key inserted in the idle state,

5a , b the clutch with inserted key with effective closing connection and

6 The view of the cylinder lock with the key inserted.

The cylinder lock shown in the drawing has a cylinder housing 11 with a first and a second opposing receptacle 12 respectively 13 on. In the in the 1 shown on the left first picture 12 is a locking core 14 rotatably mounted, which can be actuated by a key (not shown). The lock core has for this purpose a plurality of locking pins 15 on whose parting plane are aligned with a mechanically matching key so that a rotation is possible. The operation and structure corresponds to a conventional safety lock and therefore requires no further explanation.

In the second photograph shown on the right in the drawing 13 is an electrically actuated clutch 16 provided, which can be switched via an electrical signal and then a twisting of the locking lug 17 through the lock core 14 allowed. In detail, the arrangement is such that the coupling body 18 rotatable in the second receptacle 13 is stored and rotatably with the locking lug 17 communicates. By rotating the clutch can thus be done twisting the locking lug to unlock the door or the like.

On the first shot 12 turned away side of the cylinder lock is a knob 19 arranged with the locking nose 17 interacts. The knob 19 is non-rotatable with the coupling body 18 connected so that when turning the knob, the locking lug by means of the coupling body 18 is twisted. The door can thus be unlocked.

In the knob 19 is an electronic control 20 arranged, which from a network-independent power source, such as a battery 21 , is powered. The electronic control 20 generates the required switching signal, that for switching the clutch 16 is needed. The electronic control comprises an antenna 22 for receiving electromagnetic signals. The antenna 22 may be part of a passive transponder system whose counterpart is located in the key or in the key handle. The antenna can also be part of an active transmitter and receiver arrangement whose transmitter is integrated in the key or key handle.

The antenna 22 is preferably in which the first recording 12 comprehensive front area 34 of the cylinder housing 11 arranged. In detail, the arrangement is such that the antenna in the front end face 23 the cylinder housing integrated and via a cable 24 with slip ring contacts 25 through which the received signal to the electronic control 20 in the freely rotatable knob 19 is directed. The electrical cable preferably runs in a groove in the cylinder housing 11 , so that the outer dimensions of the cylinder housing remain unchanged for installation in the lock case.

The key 35 is with a key handle 36 provided that a section 37 in which the transponder or an antenna 38 is integrated. This section has in the inserted state of the key a small distance from the end face of the cylinder housing. This causes a short signal transmission path.

The following is in particular based on the 2 to 5 explains the operation of the cylinder lock. In the 2 and 3 are the essential components of the clutch shown with the key removed. The coupling has a coupling driver 26 with at least one projection 27 ' . 27 '' . 27 ''' on. At rest according to 2 is the clutch driver 26 within the coupling body 18 freely rotatable because the projections 27 ' . 27 '' . 27 ''' above a paragraph 28 of the coupling body 18 with corresponding recesses 29 for the projections 27 ' . 27 '' . 27 ''' runs. The Kupplungsmitnehmer can in constant operative connection with the rotatable connector 30 The locking core stand and is by a spring 39 held in the illustrated axial resting state.

When the key is inserted, the clutch driver becomes 26 about a predetermined axial path in the direction of the arrow 31 emotional. With mechanically matching key now the lock core is freely rotatable, wherein the axial paths are dimensioned so that the projections 27 ' . 27 '' . 27 ''' the Kupplungsmitnehmers 26 initially still out of engagement with the recesses 29 of the coupling body 18 are. The twist and the position of the protrusions above the heel 28 is in the 4a , b shown.

When inserting the mechanically matching key is by means of an axial extension 32 a microswitch 33 operated by the electronic control 20 is turned on. The electronic control generates, after appropriate evaluation and authorization, the electrical switching signal through which the clutch is attracted. In this case, the authorization can be checked by evaluating a suitable transponder signal, that of the inserted key via the antenna 22 and the slip ring contacts 25 is directed to the evaluation unit within the electronic control.

For example, when putting on an electromagnet the clutch 16 becomes the clutch driver 26 continue in the direction of the arrow 31 moved in the direction so that the projections 27 ' . 27 '' . 27 ''' engaged with the recesses 29 reach. A non-rotatable connection of the lock core with the coupling body 18 is thus produced. By turning the key now the lock core will rotate the coupling body, which in turn rotatably with the locking lug 17 connected is. The lock can be unlocked.

To Completion of closing, when Removing the key or after a predetermined time, the electronic control turns off and the clutch falls from.

The coupling driver 26 is moved to the axial resting state, and the projections 27 ' . 27 '' . 27 ''' get out of engagement with the recesses again 29 , A rotation of the locking lug by means of the lock core is thus no longer possible. If the door could not be opened, the closing process must be repeated.

The drop of the clutch can basically be done at any time of the closing process and thus at any angular position of the locking lug. It is also possible that the closing nose assumes any angular position by the knob. However, it is desirable that the key and the locking lug are always in a defined angular position to each other. For this purpose, the projections 27 ' . 27 '' . 27 ''' the Kupplungsmitnehmers distributed asymmetrically along the circumference, so that in only one angular position ( 5a , b) the projections 27 ' . 27 '' . 27 ''' in the recesses 29 can intervene. The projections may be axially or, as shown, radially aligned. In principle, a single lead can be sufficient. For a perfect and accurate closing is in the embodiment shown, a coupling driver with three projections 27 ' . 27 '' . 27 ''' provided, which is formed substantially Y-shaped. The jetty 27 ''' This is wider than the two legs 27 ' . 27 '' , As a result, a secure engagement of the projections is achieved in the correspondingly formed recesses when the clutch is applied, even if the Kupplungsmitnehmer first, as in 4a , b shown, in a twisted position to the coupling body 18 located. Such a design of the Kupplungsmitnehmers may also be useful in an exclusively mechanical rotary knob cylinder lock, as here also a twisted position of the locking lug may occur to the key through an independent rotation of the knob.

In the embodiment shown in the drawing, the electromechanical lock is completely independent of external devices. It is of course possible over the Slip ring contacts 25 For example, connect an external power supply. It is also possible to connect via this the electronic control to a central data processing system. Finally, it is also possible to supply the clutch via such slip ring contacts with the required switching signal. In this case, the entire electronic control could be located externally.

It it is obvious that one such training of a lock the merits of a mechanical with those an electronic lock connects. For opening the door is on the one hand, the mechanical matching keys neces sary. If this generates the correct electronic code, switches the clutch and the door can open become. If the electronic code is incorrect, only the lock core is free be turned without a rotatable connection is made to the locking lug. One violent opening This makes it much more difficult.

By the use of the switching means that only at mechanically matching key The electronic control turns on, can save power be significantly reduced. In principle, such a switching means therefore also with other electromechanical locking systems be appropriate.

The electronic control is always inaccessible completely behind the door. A damage and influence from outside is no longer possible. The security can thus be further increased.

Claims (10)

Electromechanical cylinder lock, in particular for locking systems, with a cylinder housing ( 11 ), with two opposite images ( 12 . 13 ) is provided and in whose. first recording ( 12 ) a with a mechanically suitable key rotatable lock core ( 14 ) and at the first recording ( 12 ) on the opposite side a manually operable knob ( 19 ) rotatably mounted, which knob rotatably with a locking lug ( 17 ) cooperating, which actuates the locking bolt, characterized in that in the second receptacle ( 13 ) of the cylinder housing an electrically actuated and having an electromagnet clutch ( 16 ) is arranged, which in the idle state, a free rotation of the lock core ( 14 ) is allowed at mechanically matching key and due to a generated by an at least partially arranged in the knob electronic control when justified generates electrical switching signal and a rotationally fixed connection between the locking lug ( 17 ) and the lock core ( 14 ) causes and thus a rotation of the locking lug ( 17 ) by the key. Cylinder lock according to claim 1, characterized in that the coupling ( 16 ) and / or the electronic control is idle at rest. Cylinder lock according to one of claims 1 or 2, characterized in that the coupling ( 16 ) rotatably with the knob ( 19 ) connected is. Cylinder lock according to one of claims 1 to 3, characterized in that at least one switching means ( 33 ) is provided in the cylinder housing, which is actuated by the mechanically matching key to turn on the electronic control. Cylinder lock after one of the claims 1 to 4, characterized in that by the switching means the electronic control for a predeterminable time is turned on. Cylinder lock according to one of claims 1 to 5, characterized in that the coupling ( 16 ) an axially movable Kupplungsmitnehmer ( 26 ) which is brought by the inserted key in a first axial position in which the switching means ( 33 ), and in that, on the basis of the switching signal generated with authorization, the coupling driver ( 26 ) through the coupling ( 16 ) can be brought into a second axial position in which the rotationally fixed connection between the closing nose ( 17 ) and locking core ( 14 ) is effected. Cylinder lock according to one of claims 1 to 6, characterized in that the coupling ( 16 ) a clutch driver ( 26 ) which is provided with circumferentially asymmetrically arranged projections which in the tightened position of the coupling in only one angular position relative to the key in corresponding recesses of the coupling body ( 18 ) and the non-rotatable connection between the closing nose ( 17 ) and locking core ( 14 ) cause. Cylinder lock according to one of claims 1 to 7, characterized in that the electronic control ( 20 ) an antenna ( 22 ) which cooperates with a passive transponder system or a transmitter unit in the key and which in the front region of the first receptacle, in particular the front end face ( 23 ) of the stationary cylinder housing ( 11 ) is integrated and via at least one slip ring contact ( 25 ) with the knob ( 19 ) located electronic control ( 20 ). Cylinder lock according to one of claims 1 to 8, characterized in that the electronic control is connected via at least one slip ring contact with a central data processing system. Cylinder lock after one of the claims 1 to 9, characterized in that the cylinder housing standardized or standardized dimensions.